British Prime Minister Keir Starmer faced mounting pressure on Friday after revelations that his nominee for UK ambassador to the United States, Peter Mandelson, had been appointed despite failing security vetting checks.
The Guardian reported that Starmer was not informed of the vetting failure until Tuesday, even though Cabinet Secretary Antonia Romeo and Cabinet Office Permanent Secretary Catherine Little had been aware of the issue since last month. Government sources said the two officials were not withholding information but were engaged in a complex risk-assessment process regarding the sharing of sensitive data.
NBC News added that Mandelson’s appointment had been controversial from the start due to his past association with convicted sex offender Jeffrey Epstein, which heightened concerns about his suitability for a role requiring access to highly classified intelligence.
Downing Street blamed the Foreign Office for overruling UK Security Vetting’s recommendation not to appoint Mandelson, a claim echoed by Darren Jones, the chief secretary to the Treasury, who said no minister had been informed of the security assessment. Jones described the situation as “astonishing” but insisted it remained within procedural rules.
Starmer said he was “absolutely furious” and called it “staggering” and “unforgivable” that he had been kept in the dark. He pledged to provide a full account to Parliament on Monday, though opposition leaders dismissed his explanation as implausible.
Within hours of the Guardian’s disclosure, Olly Robbins, the permanent secretary of the Foreign Office, resigned. Robbins is understood to be furious at being made a scapegoat and believes he followed proper procedure. He is scheduled to testify before the Commons Foreign Affairs Select Committee on Tuesday, where some ministers fear he may challenge No 10’s narrative.
For more on this story, see Ed Miliband Faces Pressure Over High Energy Costs and North Sea Drilling.
Senior MPs have suggested Robbins may possess documentation — referred to colloquially as “receipts” — that could contradict the government’s version of events. One senior MP told the Guardian they would be “amazed if Olly didn’t keep receipts.”
Despite the trade deal reached between the UK and the United States in May 2025 — which Mandelson’s expertise as a former EU trade chief was credited with helping secure — the controversy over his appointment has overshadowed any diplomatic success and threatened to destabilise Starmer’s premiership.
Starmer faces a parliamentary reckoning as Robbins prepares to testify
The prime minister’s statement to MPs on Monday will be closely watched, but the real test may reach on Tuesday when Olly Robbins appears before the Foreign Affairs Select Committee. His testimony could either confirm Downing Street’s account or expose contradictions that deepen the crisis.

This follows our earlier report, Keir Starmer slams Kanye West’s Wireless festival booking over antisemitism.
Opposition leaders unite in demanding Starmer’s resignation
Kemi Badenoch of the Conservative Party called Starmer’s claim of ignorance “completely preposterous,” while Liberal Democrat leader Ed Davey said the prime minister “must go” if he misled Parliament. The rare cross-party consensus underscores the gravity of the situation.
Why did Starmer say he was unaware of Mandelson’s vetting failure?
Starmer said he was not informed by officials in the Cabinet Office or Foreign Office about UK Security Vetting’s recommendation against appointing Mandelson, and only learned of the issue this week.
What consequences could Robbins’ testimony have for the government?
If Robbins contradicts No 10’s version of events, it could undermine Starmer’s defence, fuel accusations of a cover-up, and increase pressure for his resignation.
